Cherry-picked gemini: Fix "invalid argument" error when request contains
no tools (#28747)

When we do not have any tools, we want to set the `tools` field to
`None`

Release Notes:

- Fixed an issue where Gemini requests would sometimes return a Bad
Request ("Invalid argument...")

Co-authored-by: Bennet Bo Fenner <bennet@zed.dev>

Fine-tuning some areas of the Agent Panel design.

Release Notes:

- N/A

Release Notes:

- N/A

Closes #28475

Updates `rename` and `code_action` `input_schema` methods to use
`json_schema_for<T>()` which transforms standard JSONSchema into the
subset required by Gemini.
Also makes `input_schema` implementations consistent.
Tested tools against Gemini 2.5 Pro Preview, Zed Claude 3.7 Sonnet
Thinking, o3-mini

Release Notes:

- Agent Beta: Fixed error 400 `INVALID_ARGUMENT` when using Gemini with
`code_actions` or `rename` tools enabled.

Release Notes:

- Add support for OpenAI GPT-4.1 via Copilot Chat and OpenAI API

---------

Co-authored-by: Danilo Leal <daniloleal09@gmail.com>
Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>

This ensures that we respect the `LanguageModelToolSchemaFormat` value
when we call `tool.input_schema`. This prevents us from breaking Gemini
compatibility when adding/changing built-in tools. See #28634.

The test suite will now fail with an error message like this, when
providing an incompatible input_schema:

```
thread 'tests::test_tool_schema_compatibility' panicked at crates/assistant_tools/src/assistant_tools.rs:108:17:
Tool schema for `code_actions` is not compatible with `language_model::LanguageModelToolSchemaFormat::JsonSchemaSubset` (Gemini Models).
Are you using `schema::json_schema_for<T>(format)` to generate the schema?
```


Release Notes:

- N/A

Ended up not making this one visible only upon hover or something
because the layout alignment would be weird given the list item spans
the full width. So, experimenting with this design here:

<img
src="https://github.com/user-attachments/assets/62bf661e-1aae-4644-8a89-49cefb3e8130"
width="700" />

Release Notes:

- agent: Add scrollbar to the history view.

![CleanShot 2025-04-14 at 11 15
38@2x](https://github.com/user-attachments/assets/9e803ffb-74fd-486b-bebc-2155a407a9fa)

Release Notes:

- agent: Handle context window exceeded errors from Anthropic

This PR cleans up the thread auto-capturing added in #28271.

- Removed usage of `unsafe`
- Fixed feature flag check
- We were incorrectly not respecting the feature flag in release builds
- Made sure the telemetry event was being run on the background executor

Release Notes:

- N/A

Release Notes:

- N/A

When you hit the back button in the agent panel toolbar, we were
returning the focus to the buffer instead to the panel's message editor,
which is likely where you want to be after quickly checking history or
settings.

Release Notes:

- N/A

Allow expanding the message editor while the agent panel is not focused,
right now there is no effect when you use the button from another focus

Release Notes:

- N/A

<img
src="https://github.com/user-attachments/assets/2cdc5121-dd7b-4f46-8d43-88d5152c77ea"
width="550" />


Release Notes:

- N/A

It was too tiny, felt like we could use more breathing room.

Release Notes:

- N/A

Mentioning "MCP" more prominently, adding tool descriptions in the icon
button tooltip, and other UI adjustments.

<img
src="https://github.com/user-attachments/assets/e021b3be-99b8-454c-b5fd-0221a7947a35"
width="600" />

Release Notes:

- N/A

Also took the opportunity to rename the "Continue in New Thread" item to
a potentially clearer name.

<img
src="https://github.com/user-attachments/assets/024de07d-f215-4c41-8fbe-652a216b61d9"
width="300"/>

Release Notes:

- N/A

This PR splits up the rendering of the message editor into multiple
functions. Previously we had a single `h_flex()...` expression which
spanned across 550 lines, `cargo fmt` stopped working.

Release Notes:

- N/A

Release Notes:

- N/A

This code was used before we had a proper completion menu for
at-mentions

Release Notes:

- N/A

Release Notes:

- agent: Show recommended models in the agent model selector and display
the provider in the model selector's trigger.

---------

Co-authored-by: Danilo Leal <daniloleal09@gmail.com>
Co-authored-by: Danilo Leal <67129314+danilo-leal@users.noreply.github.com>

Release Notes:

- agent: Start language servers when accessing files via tools

Co-authored-by: Michael <michael@zed.dev>

Closes #ISSUE

Release Notes:

- Fixed a bug that could cause the staged status of entries in the git
panel to be stale.

Cherry-picked Try to weak-link ScreenCaptureKit always (#28585)

Release Notes:

- Fixed a crash on macOS (Catalina, Big Sur). Users may need to manually
redownload Zed if they updated to a broken release.
([#28585](https://github.com/zed-industries/zed/pull/28585))

Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

Cherry-picked Fix a panic in the git store (#28590)

Closes #ISSUE

Release Notes:

- Fixed a panic that could occur when git statuses were updated.

Co-authored-by: Cole Miller <cole@zed.dev>

Release Notes:

- agent: Fix a bug where an inserted @mention did not show up as the one
that was selected

Moving from "NewPromptEditor" to "NewTextThread". We recently re-named
that and this was missing.

Release Notes:

- N/A

This PR allows expanding the message editor textarea to fit almost the
total height of the Agent Panel. Stylistically, I'm also changing the
font family we use in the textarea to use the buffer font; want to
experiment with this for a bit.

Release Notes:

- agent: The Agent Panel textarea can now be expanded to fill almost the
total height of the panel.

---------

Co-authored-by: Bennet Bo Fenner <bennet@zed.dev>
Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>

This PR lightly refactors the `EditorMode::Full` exposing two new
methods: `is_full` and `set_mode`.

Motivation is to expose fields that modify the behavior when the editor
is in `Full` mode. By using is `mode.is_full()` instead of
`EditorMode::Full` we can introduce new fields without breaking other
places in the code.

Release Notes:

- N/A

Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>

Release Notes:

- Fixed a regression that caused the agent to hang sometimes.

---------

Co-authored-by: Thomas Mickley-Doyle <tmickleydoyle@gmail.com>
Co-authored-by: Nathan Sobo <nathan@zed.dev>
Co-authored-by: Michael Sloan <mgsloan@gmail.com>

This allows us to not scan the codeblock content for newlines on every
frame in `active_thread`

Release Notes:

- N/A

From Claude 3.5 Sonnet to **Claude 3.7 Sonnet**.

Release Notes:

- Change the default model of Zed's hosted LLM service to Claude 3.7
Sonnet.

This PR fixes usage of non-streaming Copilot Chat models.

Closes https://github.com/zed-industries/zed/issues/28528.

Release Notes:

- Fixed an issue with using non-streaming Copilot Chat models (e.g., o1,
o3-mini).

This PR introduces support for a `--user-data-dir` CLI flag to override
Zed's data directory and proposes renaming `support_dir` to `data_dir`
for better cross-platform clarity. It builds on the discussion in #25349
about custom data directories, aiming to provide a flexible
cross-platform solution.

### Changes

The PR is split into two commits:
1. **[feat(cli): add --user-data-dir to override data
directory](https://github.com/zed-industries/zed/pull/26886/commits/28e8889105847401e783d1739722d0998459fe5a)**
2. **[refactor(paths): rename support_dir to data_dir for cross-platform
clarity](https://github.com/zed-industries/zed/pull/26886/commits/affd2fc606b39af1b25432a688a9006229a8fc3a)**


### Context
Inspired by the need for custom data directories discussed in #25349,
this PR provides an immediate implementation in the first commit, while
the second commit suggests a naming improvement for broader appeal.
@mikayla-maki, I’d appreciate your feedback, especially on the rename
proposal, given your involvement in the original discussion!

### Testing
- `cargo build `
- `./target/debug/zed --user-data-dir ~/custom-data-dir`

Release Notes:
- Added --user-data-dir CLI flag

---------

Signed-off-by: Marko Kungla <marko.kungla@gmail.com>

Cherry-picked Do not query for LSP tasks buffers that do not belong to
the position given (#28536)

Follow-up of https://github.com/zed-industries/zed/pull/28359

Release Notes:

- Fixed a panic when LSP tasks are queried in certain multi buffer
excerpts

Co-authored-by: Kirill Bulatov <kirill@zed.dev>

Cherry-picked Bump rustls (#28531)

Closes #26699

Release Notes:

- Fixed a panic when enabling or disabling a VPN on macOS

Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

- Adds the progress bar component

Release Notes:

- N/A

Release Notes:

- N/A

Cherry-picked Fix merge conflicts jumping (#28508)

This regressed in #27568, oops.

Release Notes:

- Fixed a bug causing conflicted files in the git panel to jump to the
"Tracked" section as soon as they were staged.

Co-authored-by: Cole Miller <cole@zed.dev>

Cherry-picked Downgrade environment-related logging (#28509)

Closes #ISSUE

Release Notes:

- N/A *or* Added/Fixed/Improved ...

Co-authored-by: Cole Miller <cole@zed.dev>

Release Notes:

- agent: Replace `bash` tool with `terminal` tool which uses the current
shell

---------

Co-authored-by: Bennet <bennet@zed.dev>
Co-authored-by: Antonio <antonio@zed.dev>

Also, we moved the logic for driving the agentic loop into `Thread` so
that we don't have to re-implement it.

Release Notes:

- N/A

---------

Co-authored-by: Nathan Sobo <nathan@zed.dev>